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Time domain pulse shaping using a genetic algorithm

Mori, Andrew (2010-03)

Thesis (MSc (Physics))--University of Stellenbosch, 2010.

Thesis

ENGLISH ABSTRACT: Through the use of complex Laser Pulse Shaping, numerous fundamental laser induced processes may be controlled as well as studied. This work serves as
an introduction into Laser Pulse Shaping, with the focus on a simple Pulse
Shaping experiment, as well as to determine whether future, more complex
processes may be similarly controlled.
A description of Laser Pulse Shaping theory is presented here, along with a
full explanation of a simple experiment to maximize second harmonic generation
(SHG) through Pulse Shaping. This experiment is simple on a theoretical
level yet complicated in both implementation as well as operation. The experimental
setup and software integration required hardware compatibility in
multiple programming languages. This work was successful in the sense that
a fully automated dispersion compensation system, accomplished through the
use of a genetic algorithm in a feedback controlled loop, was constructed and
tested.
The success of this experiment and the understanding gained in this work
has laid the foundation for further complex Pulse Shaping systems to be achieved
in future.